Robtex

Up: 91.189.112.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.189.116.0/23
Down right: 91.189.118.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.189.116.13	A+PTR	mx01.nicmail.ru
91.189.116.13	A	mx01.r01mail.ru
91.189.116.13	A	mx1.peterhost.ru
91.189.116.14	A+PTR	mx01.nicmail.ru
91.189.116.14	A	mx01.r01mail.ru
91.189.116.14	A	mx02.nicmail.ru
91.189.116.15	A+PTR	mx01.nicmail.ru
91.189.116.15	A	mx01.r01mail.ru
91.189.116.15	A	mx02.nicmail.ru
91.189.116.16	A+PTR	mx01.nicmail.ru
91.189.116.16	A	mx01.r01mail.ru
91.189.116.16	A	mx02.nicmail.ru
91.189.116.17	A	web-relay.nicmail.ru
91.189.116.18	A+PTR	web-relay.nicmail.ru
91.189.116.19	A+PTR	web-relay.nicmail.ru
91.189.116.20	A	web-relay.nicmail.ru
91.189.116.21	A	web-relay.nicmail.ru
91.189.116.22	A	web-relay.nicmail.ru
91.189.116.23	A	relay141.nicmail.ru
91.189.116.25	PTR	relay143.nicmail.ru
91.189.116.26	PTR	relay144.nicmail.ru
91.189.116.40	PTR	nicmail.ru
91.189.116.40	A	pilot-tv.net
91.189.116.40	A	mazhurenko.ru
91.189.116.41	PTR	nicmail.ru
91.189.116.41	A	pilot-tv.net
91.189.116.41	A	mazhurenko.ru
91.189.116.42	PTR	nicmail.ru
91.189.116.42	A	pilot-tv.net
91.189.116.42	A	mazhurenko.ru
91.189.116.43	PTR	nicmail.ru
91.189.116.43	A	pilot-tv.net
91.189.116.43	A	mazhurenko.ru
91.189.116.44	A	r01mail.ru
91.189.116.45	A	r01mail.ru
91.189.116.46	A	mail.hc.ru
91.189.116.46	A	mail.cm.hc.ru
91.189.117.1	A	web-relay.nicmail.ru
91.189.117.2	A	web-relay.nicmail.ru
91.189.117.3	A	web-relay.nicmail.ru
91.189.117.4	A	web-relay.nicmail.ru
91.189.117.5	PTR	relay161.nicmail.ru
91.189.117.6	A+PTR	relay162.nicmail.ru
91.189.117.115	A	mail.mail-server.no